Access frequency caching hardware structure
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United States of America Patent
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Oct 11, 2022
Grant Date -
N/A
app pub date -
Jul 16, 2021
filing date -
Jul 16, 2021
priority date (Note) -
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Abstract
An access frequency caching hardware structure has entries each storing an access frequency counter indicative of a frequency of accesses to a corresponding page of a memory address space. Access frequency tracking circuitry is responsive to a given memory access request requesting access to a target page, to determine whether the access frequency caching hardware structure already includes a corresponding entry which is valid and corresponds to the target page. When the structure includes the corresponding entry, a corresponding access frequency counter specified by the corresponding entry is incremented. In response to a counter writeback event associated with a selected access frequency counter corresponding to a selected page, an update is made to a global access frequency counter corresponding to the selected page within a global access frequency tracking data structure stored in the memory system.
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